Concrete-block machine.



No 848,697. PATENTEAPR. 2, 1907. M. SILVA (M. LUMPP. CONCRETE BLOCK MACHINE APPLIOATYIONFILED AUG. 3l, 1906.

4 SHEETS-SHEET 1.

No. 848,697. PATENTED APR. 2, 1907.

M. SILVA d; A. LUMPP.l CONCRETE BLOCK MACHINE.

APPLICATION FILED AUG. 31,* 1906.

4 SHEETS-SHEBT 3.

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atlo'mqo NoI 848,697. Y' PATENTED APR. 2, 1907.

M..SILVA L A. LUMPP. I

CONCRETE BLOCK MACHINE.-

APPLICAKTIoN FILED AUC. s1, 1906'.

' 4 SHEETS-SHEET 4.

UNITED STATES PATENT ortica@ MANUEL sILvA ANIi ANDREW LUMISP, or SPRINGFIELD, ILLINoIs.

' 'CONCRETE-BLOCK mAoH|NE..

- Specification of Letters Patent.

Application led August l3]., 1906. Serial No. 332,847.

Patented April 2, 1907.

To will whom t may concern.' l

Be it known that we, MANUEL SILVA and ANDREW LUMPP, citizens of the United States, residing at Springfield, in the county of Sangamon and State of Illinois, have invented a new and -useul Improvement in a Concrete-Block Machine, of which the following is a speciiication.

` This invention relates to amold for building-blocks designed to make four blocks at a time, to make blocks of-various sizes and shapes; and a special object of the invention is a mold of this kind which will turn out a block having a clean square corner.

The invention consists of the novel features of construction hereinafter described, pointed out in the claims, and shown in the' drawings, in'which- Figure 1 is a perspective'view of thel mold with the top removed. Fig. la is an inverted perspective view of the top. Fig.- 2 is a transverse section taken through the moldl and through two of the compartments formed in it. Fig. 3 is a perspectiveview ofthe mold in a knocked down or opened position.

Fig. 4 is a partial plan view of the central portion, a portion of end gates beingv shown in section. Fig. 5 is a planlview of one side of the mold. Figs. 6, 7, 8, 9, and 10 are de. tail pers ective views of various forms of buildinglocks made with this mold.

In the drawings, Al represents a, suitable base upon which are placed two arallel cen` tral partitions B, slig tly space apart. In the spacek between these partitions is arranged a rod C, which projects at each end beyond the artitions and beyond opposite ends of the base A, andthis projecting portions is threaded. A tail-nut C works upon each end of the rod C for a purpose hereafter described. I

The base A carries brackets D, which pro'- jects upon its op osite sides and Aare bent to form s eeves, an upon the margins of the base are arranged sides E which are provided with brackets E2, also provided with sleeves,

and a rod E extends through the sleeves of the brackets D and E2 u on each side of the mold, the rods E forming intles and the brackets hinges, wherebyt e sides E are hinged to the base A and swing outwardly and downwardly. To these hinged sides E are secured bores G, which may be of any desired size or shape or which may be arranged ortion of the sides E. e partitions B an thesides E are provided with suitable tongues arranged vertically, which are enga ed'by vertical and transverse partitions F, w ereby each side of the mold is divided into two compartments, one of which is preferably larger than the other. The .ends of the com artments thus formed are closed by means o end gates H, which are connected by suitable hinges to the side E, res ectively there being two end gates at eac locked in closed p ing-plates H', W ichiit over the rods Cand there upon the free edges of the gates, each plate H being formed tightly against two of said gates bymeans of the nut C.

The concrete, cement, or other material is not thrown directly upon .the base A; but suitable plates A are laid in the compartments of the mold and rest upon the base A, which plates are removed from the mold with the blocks. Also in order that the edges of the blocks may be clean 'cut and Aprotected against damage in handling or tamping we' provide 4for lhe compartments detachab'lel side blocks J, each of which 'is provided alon each side withan interiorly-beveled flange J lOver the entire mold when in closed position a top or cover K is placed, which is cut out, said cut-outportions registerin with the end of the mold. These end gates are sition by means of clampcompartmentoithe mold. Suita lecntches K are carried by the'topandrareengaged by hooks K2, pivoted upon the sides The material of which the blocks are to be formed is placed in the compartments, tamped orV `manufacure of these blocks.

In Figs. 6 and 7 we have shown a block L' ,ner-block M of the same size and construction as the block M. The block L is also a corner-block, as will be obvious.

Having thus fully described our invention,

what we claim as new, and desire to secure by Letters. Patent, is-

1. A concrete -building-block machine comprising a base parallel partitions centrally carried by said base, hinged sides car- IOO IIO

'fitted betweensaid sides and first-mentioned partitions, end'gates hinged to the sides, a rodarranfed between the central partitions and threaded adjacent each end, a clampingplate adapted to fitupon said rod and engage theI gate at each end 'of the mold, and a nut adapted to Work upon each end portion ofthe rod andA hold the clamping-plate at said end into engagement With thejgates at thatv end, a ('o'p and means for looking the top to the s1 es.

3.A A building-block machine, comprising a mold dividedvinto a plurality 'of compartments,hinged sidesswinging outwardly and downwardly forming the outer sides of said compartments, endgates hinged to each end ot each of said sides, a clamping-plate adapted to engage simultaneously free marginal portions of two of said gates, land means for locking the said clamping-plates into position.

.4. In a device of the kind describedcomprising a base centrally-arranged vertical partitlons thereon, sides hinged to said plates, end gates hinged to the said sides, and bearing against the ends of the said partitions, transverse partitions, removable side plates having a beveled flange extending parallel with their edges, said plates {ittin in the mold and a removable top adapte to rest over the sides, end gates and partitions, the said top being cut out as and for the purpose set forth.

5. A mold of the kind described comprising a permanent base, fixed centrally-arranged partitions, said partitions being spaced apart, a rod arranged between and parallel to the said partitions and projecting beyond the ends of the same, the end portions of the rod being threaded, sides hinged to the base, end gates hinged. to the sides, each end gate bearing against one of the partitions 'at its ends, a top, said top being cut out, cores carried by the hinged sides a clamping-plate adapted to slide upon the end portions of thc` rod, one oll said clampingplates being provided at each end of the mold and each clamping-plate engaginor two of the gates, and nuts working upon the rod and holding the vclampingplates against the gates, as and for the purpose set forth.

MANUEL SILVA. ANDREW LUMPP, Witnesses:

(llms. E. OPEL, ll. l). Glenn. 

